This circuit is from a 1964 Electronic Design. The transistors are from that time. They can be replaced by current equivalents.
This circuit came out in an English publication of 1976, but it can be easily assembled using...
This circuit for 12 V relays was found in the July 1992 Radio Electronics magazine. The circuit is set...
This circuit produces two signals with inverted phases. One is taken for the emitter of Q1 and the...